AFE Silver Bullet Throttle Body Spacer GM Colorado/Canyon 15-16 L4-2.5L 1987-nissan-pulsar-nx-esi2432466 With the already high compression

With the already high compression ratio

Air is directed through the air filter into the engine's throttle body for a guaranteed power gain

If you are upgrading your SR or KA you will need a Z32 style maf plug

Our billet aluminum 7

AFE Silver Bullet Throttle Body Spacer GM Colorado/Canyon 15-16 L4-2.5L 1987-nissan-pulsar-nx-esi2432466 With the already high compressionSilver Bullet throttle body spacers create turbulence in the air flow at the point just prior entry into the engine increasing horsepower, torque and improving throttle response and fuel efficiency. Silver Bullet throttle body spacers are constructed out of durable T 6061 billet aluminum and using a unique serrated helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix only throttle spacers.